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Subject: Re: questions about WAC

Author: Uri Blass

Date: 06:14:32 12/27/01

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On December 27, 2001 at 08:54:19, Gian-Carlo Pascutto wrote:

>On December 27, 2001 at 08:32:14, José Carlos wrote:
>
>>On December 27, 2001 at 06:43:23, Gian-Carlo Pascutto wrote:
>>
>>  Mine needs 6:40 (PIII-900) to show a negative score here, in ply 16. There's
>>so much to do in eval...
>
>I get a negative score in 18 seconds, but let me show you what I mean
>with 'nullmoves itself to death':
>
>[...]
>
>10      37   413  2523987  g5 !
>10      37   476  2889129  Kf8 !
>10      37   500  3027747  e5 !
>10      37   518  3134806  h5 !
>10      37   545  3306723  a5 !
>10      37   565  3411045  a6 !
>10      37   596  3591841  g6 !
>10      37   663  4009756  h6 !
>10      37   675  4087799  Kh8 !
>10      37   688  4153091  Kf7 Nc2 Ke7 Kg1 a5 b4 a4 b5 e5 Ne3
>11      31   793  4902264  Kf7 Nc2 a5 Kg1 g5 b4 a4 b5 g4 Ne3 h5
>11      32   797  4935549  g5 !
>11      32  1003  6147838  h5 !
>11      32  1057  6480470  Kf8 !
>11      32  1105  6769974  g6 !
>11      32  1180  7247897  a5 !
>11      32  1215  7450589  e5 !
>11      32  1231  7546691  a6 !
>11      32  1258  7694831  h6 !
>11      32  1303  7980135  Kh8 !
>11      32  1335  8172728  Kf7 Nc2 a5 Kg1 g5 b4 a4 b5 g4 Ne3 h5
>12     -18  1810 11465842  Kf7 ??
>12     -17  1921 12091128  g5 !
>12     -17  2922 18491468  g6 !
>12     -17  3306 21019493  h5 !
>12      -5  3486 22062248  h6 !
>12      -5  3701 23193981  Kf8 !
>12      -5  3776 23600593  a5 !
>
>[...]
>
>--
>GCP

I know what is null move but I do not understand this output.
If 2 moves have the same score then
what is the reason that your program changes it's mind.

If a move fail high then it means that the score is clearly
bigger than the previous score so if the previous score was
37 the new score should be at least 38
I assume that you use integers for scores.

Uri



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